All categories

3 years ago

Y = -2x + 5 and 2x + y = -1 Solutions

Mathematics

1 answer:

Naily [24]3 years ago

7 0

Answer:

no solution

Step-by-step explanation:

hello

we replace y = -2x + 5 in the second expression and it comes

2x + -2x + 5 = -1

<=> 5 = -1

this is always false so there is no solution

hope this helps

You might be interested in

A store is having a sale on trail mix and jelly beans. For 5 pounds of trail mix and 6 pounds of jelly beans, the total cost is

nordsb [41]

Answer:

$t = 2.5 \\ j = 3.75$

Step-by-step explanation:

$5t + 6j = 35 \\ 3t + 2j = 15 = > 2j = 15 - 3t \\ \\ 5t + 3(15 - 3t) = 35 \\ 5t + 45 - 9t = 35 \\ - 4t + 45 = 35 \\ - 4t = - 10 \\ 4t = 10 \\ t = 2.5 \\ \\ 3(2.5) + 2j = 15 \\ 7.5 + 2j = 15 \\ 2j = 7.5 \\ j = 3.75$

Check:

$5t + 6j = 35 \\5(2.5) + 6(3.75) = 35 \\ 12.5 + 22.5 = 35 \\ 35 = 35 \\ \\ 3t + 2j = 15 \\ 3(2.5) + 2(3.75) = 15 \\ 7.5 + 7.5 = 15 \\ 15 = 15$

4 0

3 years ago

Adrian makes a large pan of brownies. He cuts them into 5 even columns and 4 even rows. How many brownies does he have?

Alekssandra [29.7K]

Answer:20

Step-by-step explanation:

3 0

2 years ago

A furnace delivers 8.0 × 104 btu per hour. how many kilocalories per hour is this?

vazorg [7]

For this case the first thing you should know is the following unit conversion.
1 BTU = 0.25 Kilocalories
We then have the following numerical value:
$8.0 * 10 ^ 4 \frac{BTU}{h}$
Applying the conversion of units we have:
$8.0 * 10 ^ 4 \frac{BTU}{h} * 0.25 \frac{Kcal}{BTU}$
Canceling units we have:
$20000 \frac{Kcal}{h}$
Answer:
This is 20000 kilocalories per hour
$20000 \frac{Kcal}{h}$

6 0

2 years ago

Can someone pls help me solve thiss

Nikolay [14]

Answer:

The value of x = 9

Step-by-step explanation:

Given the angles of the triangle

(13x+2)°

(5x-7)°

(3x-4)°

We know that the sum of angles of a triangle is 180°.

Therefore,

(13x+2)° + (5x-7)° + (3x-4)° = 180°

13x+2 + 5x-7 + 3x-4 = 180°

21x + 2 - 11 = 180°

21x - 9 = 180°

21x = 180° + 9

21x = 189

divide both side sby 21

21x/21 = 189/21

x = 9

Therefore, the value of x = 9

3 0

2 years ago

(Full question above)

Bezzdna [24]

The volume of the solid is 540 mm

Step-by-step explanation:

The volume a rectangular prism is calculated as the product of its length, width and height.

Mathematically, V=l*w*h where l is length of the prism, w is width and h is the height

Given that the dimensions of the rectangular prism as;

Length=15 mm

Width= 6 mm

Height = 6 mm

V=15*6*6= <u>540 mm </u>

<h2>If this is the best answer please mark brainilest. Have a great day, hope this helps! </h2>

8 0

2 years ago